<?php
/**
 * @package SoapDiscovery  核心
 * @author 囚鸟先生
 * @copyright Copyright (c) 2013
 * @access public
 **/
class SoapDiscovery {
	private $class_name = '';
	private $service_name = '';
	
	/**
	 * SoapDiscovery::__construct() SoapDiscovery class Constructor.
	 *
	 * @param string $class_name        	
	 * @param string $service_name        	
	 *
	 */
	public function __construct($class_name = '', $service_name = '') {
		$this->class_name = $class_name;
		$this->service_name = $service_name;
	}
	
	/**
	 * 获取WSDL
	 *
	 * @return string
	 *
	 */
	public function getWSDL() {
		if (empty ( $this->service_name )) {
			throw new Exception ( 'No service name.' );
		}
		$headerWSDL = "<?xml version=\"1.0\" ?>\n";
		$headerWSDL .= "<definitions name=\"$this->service_name\" targetNamespace=\"urn:$this->service_name\" xmlns:wsdl=\"http://schemas.xmlsoap.org/wsdl/\" xmlns:soap=\"http://schemas.xmlsoap.org/wsdl/soap/\" xmlns:tns=\"urn:$this->service_name\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\" xmlns=\"http://schemas.xmlsoap.org/wsdl/\">\n";
		$headerWSDL .= "<types xmlns=\"http://schemas.xmlsoap.org/wsdl/\" />\n";
		
		if (empty ( $this->class_name )) {
			throw new Exception ( 'No class name.' );
		}
		
		$class = new ReflectionClass ( $this->class_name );
		
		if (! $class->isInstantiable ()) {
			throw new Exception ( 'Class is not instantiable.' );
		}
		
		$methods = $class->getMethods ();
		
		$portTypeWSDL = '<portType name="' . $this->service_name . 'Port">';
		$bindingWSDL = '<binding name="' . $this->service_name . 'Binding" type="tns:' . $this->service_name . "Port\">\n<soap:binding style=\"rpc\" transport=\"http://schemas.xmlsoap.org/soap/http\" />\n";
		$serviceWSDL = '<service name="' . $this->service_name . "\">\n<documentation />\n<port name=\"" . $this->service_name . 'Port" binding="tns:' . $this->service_name . "Binding\"><soap:address location=\"http://" . $_SERVER ['SERVER_NAME'] . ':' . $_SERVER ['SERVER_PORT'] . $_SERVER ['PHP_SELF'] . "\" />\n</port>\n</service>\n";
		$messageWSDL = '';
		foreach ( $methods as $method ) {
			if ($method->isPublic () && ! $method->isConstructor ()) {
				$portTypeWSDL .= '<operation name="' . $method->getName () . "\">\n" . '<input message="tns:' . $method->getName () . "Request\" />\n<output message=\"tns:" . $method->getName () . "Response\" />\n</operation>\n";
				$bindingWSDL .= '<operation name="' . $method->getName () . "\">\n" . '<soap:operation soapAction="urn:' . $this->service_name . '#' . $this->class_name . '#' . $method->getName () . "\" />\n<input><soap:body use=\"encoded\" namespace=\"urn:$this->service_name\" encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\" />\n</input>\n<output>\n<soap:body use=\"encoded\" namespace=\"urn:$this->service_name\" encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\" />\n</output>\n</operation>\n";
				$messageWSDL .= '<message name="' . $method->getName () . "Request\">\n";
				$parameters = $method->getParameters ();
				foreach ( $parameters as $parameter ) {
					$messageWSDL .= '<part name="' . $parameter->getName () . "\" type=\"xsd:string\" />\n";
				}
				$messageWSDL .= "</message>\n";
				$messageWSDL .= '<message name="' . $method->getName () . "Response\">\n";
				$messageWSDL .= '<part name="' . $method->getName () . "\" type=\"xsd:string\" />\n";
				$messageWSDL .= "</message>\n";
			}
		}
		$portTypeWSDL .= "</portType>\n";
		$bindingWSDL .= "</binding>\n";
		// 返回一个格式化字符串
		return sprintf ( '%s%s%s%s%s%s', $headerWSDL, $portTypeWSDL, $bindingWSDL, $serviceWSDL, $messageWSDL, '</definitions>' );
	}
	
	/**
	 * 返回 WSDL
	 *
	 * @return string
	 *
	 */
	public function returnWSDL() {
		return "<?xml version=\"1.0\" ?>\n<disco:discovery xmlns:disco=\"http://schemas.xmlsoap.org/disco/\" xmlns:scl=\"http://schemas.xmlsoap.org/disco/scl/\">\n<scl:contractRef ref=\"http://" . $_SERVER ['SERVER_NAME'] . ':' . $_SERVER ['SERVER_PORT'] . $_SERVER ['PHP_SELF'] . "?wsdl\" />\n</disco:discovery>";
	}
}

?>